- The patented and trademarked Vertebra System protects the rider’s Achilles tendon
- Replaceable thermoplastic resin ankle ball protection cup
- Bolt on (no Velcro® brand closure!) replaceable, adjustable and aerodynamic nylon scuff pads on the toe
- Composite inner sole
- Removable arch support
- Lorica outer construction
- Closable air vent
- Double stitched in all high stress areas
- All bolt on parts are replaceable
- Full length zip open entry
- Dual compound sole
- DuPont polymer toe shift pad
- Perforated Teflon treated nylon lining
- Shock absorbing heel cup